short summary of installation instructions:
1: install Apache
Apache? Yes. Really. See PAMP Installation
2: install an editor
You need to alter Apache’s configuration files, so you need an editor. I used Ped
3: adjust Apache config files
edit c:/data/apache/conf/httpd.conf and uncomment the line that includes conf/extra/http-dav.conf
edit c:/data/apache/conf/extra/http-dav.conf: comment out the auth-stuff, add a line with Options +Indexes for the dav-directory
create the DAV-directory specified in the above http-dav.conf file